Celestia Forums

Rho CrB
An old system, in terms of both discovery and the star's physical age. Both planets are most likely tide-locked by now.


Updated 08-11-23 to add the other two planets.

Figured I should upload my Ran (Epsilon Eridani) system addon soon as well. I'll probably reupload this addon again soon, whenever TTarrants' Exoplanets addon for April drops, given that it contains an update to Ægir's orbital parameters (as well as mass).

Ran is a young (~400-800 Myr), nearby (3.220 parsecs / 10.50 light-years) K2 V star with three debris disks, one confirmed planet known as Ægir (Epsilon Eridani b) orbiting at ~3.73 AU, one speculated planet inferred from the morphology of the disk orbiting at ~47.8 AU, and one question mark-raising RV trend that would indicate a close-in small inner planet orbiting with a period of ~80 days if it is really caused by a planet (which it probably isn't).

In this addon I have remade the former two. Both the confirmed gas giant planet Ægir and the disk morphology giant planet Epsilon Eridani c are interpreted to be gas giant worlds heavily warmed up by internal heating, in the latter case permitting an ammonia cloud layer to form in what would otherwise be a frigid, clarified atmosphere not dissimilar to Uranus or Neptune. They are larger than their mass would suggest; due to their youth, they had not yet have time to contract much yet. This also give them somewhat slower rotation periods compared to Jupiter and Saturn. Both are shrouded in haze, a very common feature among temperate and cold planets, giving them appearances that highly resemble Jupiter and Saturn respectively. Both worlds are depicted to possess substantial ring systems, with Ægir possessing a more aged, thinned out set of rings that is nevertheless still somewhat easy to see, and Epsilon Eridani c having a denser and more Saturn-like ring system.

Note that Epsilon Eridani c only appears if your Celestia install contains unconfirmed planets.

Ægir, the system's Jupiter analog with a mildly eccentric orbit.

Epsilon Eridani c, a superficially Saturn-like planet that orbits beyond Neptune's orbit radius.

Tau Boötis
Classical world in blue flames

And the other... "twin", is revealed! One of the bluest celestial worlds known, Tau Boötis b will surely flame you up in its beauty!

Download:

KIC 10403228
Unconfirmed Rings on a Uncertain World


A candidate planetary system with one of the only candidates for actual planetary rings! The outer planet candidate, with a Neptune-like orbit, could host a ring system that's likely similar to Saturn's.

Source for the ring parameters is Solution 2 of Aizawa et al. 2017.

Download:

K2-33 (EPIC 205117205)
A young transit in a direct imaging field


One of the youngest planetary transiters known to date, the K2-33 system is now the first addon in the Scorpius-Centaurus series!
K2-33 b is being blasted a bit, but not enough to make a tail.
Not included is a thin debris disk in the system, due to a serious lack of information.

Download:

Hi celestians, here the list of my earthlikes

Mesoplanets (6) Radius 6000-8600 km
Psychroplanets (3) Radius 6000-8600 km
Eyeballs (9) Radius 6000-8600 km
Ocean planets (16) Radius 9500-12700 km
Hycean planets (8) Radius >13500 km
Hydronians (5) Radius >28000 km
Fantasy exomoons (12) Radius <6000 km





Download links:
Earthlike exoplanets (file)
Real Giant Hydronians with fantasy earthlike exomoons (file)

Other adds like specular surfaces here:
Earthlike exoplanets (post)
Real Giant Hydronians with fantasy earthlike exomoons (post)

List of worlds from highest to lowest ESI numbers:

Mesoplanets:

KOI-4878.01 ESI 0.98
KOI-5737.01 ESI 0.90
KOI-7179.01 ESI 0.89
KOI-5806.01 ESI 0.88

Psychroplanets:

Kepler-1505 c ESI 0.93
KOI-7235.01 ESI 0.89

Eyeballs:

TOI-700 d ESI 0.93
Kepler-1649 c ESI 0.92
K2-72 e ESI 0.87
GJ 1061 c ESI 0.86
Ross 128 b ESI 0.86
Luyten b ESI 0.85
Kepler-442 b ESI 0.84
KOI-2626 b ESI 0.83

Ocean planets:

Kepler-296 Ae ESI 0.85
Kepler-452 b ESI 0.83
Kepler-62 e ESI 0.83
Wolf 1061 c ESI 0.80
Kepler-1410 b ESI 0.80
Gliese 667 Cc ESI 0.80
K2-3 d ESI 0.80
Kepler-1544 b ESI 0.79
Kepler-283 c ESI 0.79
Kepler-1638 b ESI 0.76
Kepler-440 b ESI 0.75
Kepler-1653 b ESI 0.74
Kepler-705 b ESI 0.73

Hycean planets:

Gliese 433 d ESI 0.74
Gliese 832 c ESI 0.74
K2-332 b ESI 0.73
Kepler-155 c ESI 0.73
Kepler-443 b ESI 0.71
Kepler-22 b ESI 0.71
Kepler-1701 b ESI 0.71
K2-18 b ESI 0.70

Some superhabitable worlds by Dirk Schulze-Makuch (2020):

KOI-5554.01 (Mesoplanet)
KOI-7711.01 (Mesoplanet)
KOI-5819.01 (Psychroplanet)
KOI-7894.01 (ocean planet)
KOI-456.04 (ocean planet)
KOI-8000.01 (ocean planet)

Other:

Kepler-438 (eyeball)
TOI-1231 (hycean planet)

Hydronians:
1.- Taphao Thong (47 UMa b)
2.- Guaraní (HD 23079 b)
3.- Kepler-90 h
4.- HD 28185 b
5.- Kepler 1634 b

Fantasy exomoons of Taphao Thong:
1.- Krai Thong, name is a thai tale character and is a Snowball moon that remember the Snowball Earth and the moon Europa of Jupiter
2.- Vimala, name is a thai tale character and is a marslike moon.

Fantasy exomoons of Guarani:
1.- Iepe, name mean number 1 in Guarani language and is a volcanic earthlike moon that remember Io of Jupiter
2.- Mucuem, name mean number 2 and this moon is a psychroplanet earthlike
3.- Mucapeire, name mean number 3 and this moon is a small dryplanet

Fantasy exomoons of Kepler-90 h:
1.- Kepler-90 h I is a volcanic earthlike moon that remember Io of Jupiter
2.- Kepler-90 h II is a earthlike moon
3.- Kepler-90 h III is a earthlike moon

Fantasy exomoons of HD 28185 b:
1.- HD 28185 b I is a hot earthlike moon that remember a mix between earth and venus
2.- HD 28185 b II is a hot moon

Fantasy exomoons of Kepler 1634 b:
1.- Kepler 1634 b I is a earthlike moon
2.- Kepler 1634 b II is a exomoon thats remember our moon (moonlike)

Kojima-1L
A nearby microlenser



Kojima-1L is the closest known microlensing system to date, "only" 1,399 light years away. The lens star is a late K-type star, with one known planet, a cold neptune-mass world.

Mu² Scorpii (Pipirima)
A ticking time bomb system


That's right, its supernova progenitor time! With the recent discovery of the Pipirima planetary system, i'd figured to quickly make this light[-ish] addon around this heavy star.
The main source is Squicciarini et al. 2022.

Download:

b Centauri
When the planet is not the highlight

You know things are wild when the stars get more coverage than the planet itself simply due to their mass. Feel free to tour b Cen's blast of a planetary system!

Download:

To aid in the further development and reaching the goal of texturing/painting every exoplanet known, here is a list of star systems that are made into addons and thus available for download. These are arranged by discovery era/status:

UPDATE (220724): See the Exoplanet Systems Collection for more details

[MPK2010b] 4450

Not much to say here. Its a solitary world.

Download:

GJ 3323
The closest known cold earth (as of now)



GJ 3323 is a very nearby star, with two known super-Earths orbiting it, the outermost of which is the closest known cold earth.

Kepler-1708
Twin worlds in a binary dance

As one of the two exomoons discovered so far (treating then as confirmed due to Kipping's extensive testing), both by the same discovery team, Kepler-1708 b-I is an rather intriguing place, even if its rather plain compared to its host planet.

Download:

It's back and it's better than ever!
Your eyes do not deceive you! I have remade my NGTS-12 addon almost from the ground up and based the texture on what we currently know about the nature of Hot Jupiters, and this is the result! I hope you enjoy this addon reboot!

NGTS-12
An inflated world around an aging star


NGTS-12 b is a sub-Saturn mass Hot Jupiter orbiting the slightly evolved G4V star NGTS-12. The planet has an orbital period of seven and a half days, which, at the time of its discovery, made it the longest period planet discovered by the main NGTS survey. It was later beaten by NGTS-19b and NGTS-20b. I say that it is "inflated" because it has a size slightly larger than that of Jupiter, but less than that of Saturn, meaning it has a low density and is thus "inflated". NGTS-12 b might be nearing the end of its lifetime, as its star may be beginning to transit into the subgiant phase, meaning that the planet could soon be engulfed by its parent star.

Please note that this addon requires Thomas Tarrants' Exoplanet Catalogue to work

Download here:

HD 150706
16 years, 16 wonders...

Welcome to the system representing my 16th birthday! Yes, this planet takes sixteen years to orbit its star. Yes, the star is sun-like. No, i don't really have anything else to say...

Anyway, the download is here:

HD 260655

Two super-earths orbiting a nearby red dwarf

This time I tried with universe sandbox textures, and it turned out quite nicely, on top of being much faster. (I'm not trying to be lazy lol)

The two planets to scale

47 Ursae Majoris Legacy
A classic system of three gas giants

This is an old version of the addon. The remaster can be downloaded here

47 Ursae Majoris, formally named Chalawan, is a yellow dwarf about 46 light-years from Earth. It is orbited by three gas giant planets, 47 UMa b, formally named Taphao Thong, 47 UMa c, formally named Taphao Kaew, and 47 UMa d, which has no formal name. They're not a particularly interesting group of gas giants, c and d are basically Saturn and Jupiter and b is a Class II with some white clouds but otherwise basically just Jupiter. But c and d's orbits are slightly eccentric, and they're all a little bit bigger than Jupiter, which I guess is a bit interesting. And hey, when was the last time a gas giant was original anyway?

Download here:

Here's a list of (confirmed) extrasolar systems sorted by distance within 10 parsecs, if anyone wants ideas on what to do next.

Planetary System - Project Sisyphus thread Link
Proxima Cen - viewtopic.php?p=148444#p148444
Wolf 359 - viewtopic.php?p=156201#p156201
Lalande 21185 - viewtopic.php?p=156266#p156266
ε Eri - viewtopic.php?p=156266#p156266
GJ 887 - viewtopic.php?p=156266#p156266
Ross 128 - viewtopic.php?p=150286#p150286
GJ 725 -
GJ 15 -
ε Ind -
τ Cet - viewtopic.php?p=157633#p157633
GJ 1061 - viewtopic.php?p=156266#p156266
YZ Cet - viewtopic.php?p=156266#p156266
Luyten's Star - viewtopic.php?p=156266#p156266
Teegarden's Star - viewtopic.php?p=156266#p156266
Wolf 1061 - viewtopic.php?p=156266#p156266
TZ Ari - viewtopic.php?p=157633#p157633
GJ 674 -
GJ 687 - viewtopic.php?p=156266#p156266
GJ 876 - viewtopic.php?p=157633#p157633
GJ 832 - viewtopic.php?p=156266#p156266
40 Eri - viewtopic.php?p=157633#p157633
GJ 3323 - viewtopic.php?p=157633#p157633
GJ 251 -
GJ 205 -
GJ 229 -
GJ 752 -
GJ 754 -
GJ 588 -
82 Eri -
GJ 784 -
GJ 555 -
GJ 581 - viewtopic.php?p=157633#p157633
GJ 338 -
GJ 625 -
GJ 892 - viewtopic.php?p=156266#p156266
GJ 667 -
GJ 880 -
LTT 1445 -
GJ 393 -
GJ 514 -
GJ 486 -
GJ 300 -
GJ 686 -
61 Vir -
CD Cet -
GJ 785 -
GJ 849 -
GJ 433 -
GJ 3325 -
HD 102365 -
WISEP J121756.91+162640.2 -
WISEP J045853.90+643451.9 -
GJ 367 -
GJ 357 - viewtopic.php?p=157633#p157633
GJ 176 -
GJ 479 -
GJ 3512 -
AU Mic -
GJ 436 - viewtopic.php?p=157633#p157633
GJ 49 -
HD 260655 - viewtopic.php?p=158293#p158293

Actually I've made a few more of those, some of which have been released in my Nearby Exoplanets addon. I'd been planning to reboot it as its own thread with a separate download for each system. (Also, those two WISE systems are binary brown dwarfs!)

Edit: Nearby Exoplanets thread is now here.